arch/sparc/Kconfig

   1 # $Id: config.in,v 1.113 2002/01/24 22:14:44 davem Exp $
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5
   6 mainmenu "Linux/SPARC Kernel Configuration"
   7
   8 config MMU
   9         bool
  10         default y
  11
  12 config HIGHMEM
  13         bool
  14         default y
  15
  16 config ZONE_DMA
  17         bool
  18         default y
  19
  20 config GENERIC_ISA_DMA
  21         bool
  22         default y
  23
  24 config ARCH_NO_VIRT_TO_BUS
  25         def_bool y
  26
  27 config OF
  28         def_bool y
  29
  30 config ARCH_SUPPORTS_AOUT
  31         def_bool y
  32
  33 config HZ
  34         int
  35         default 100
  36
  37 source "init/Kconfig"
  38
  39 menu "General machine setup"
  40
  41 config SMP
  42         bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
  43         ---help---
  44           This enables support for systems with more than one CPU. If you have
  45           a system with only one CPU, say N. If you have a system with more
  46           than one CPU, say Y.
  47
  48           If you say N here, the kernel will run on single and multiprocessor
  49           machines, but will use only one CPU of a multiprocessor machine. If
  50           you say Y here, the kernel will run on many, but not all,
  51           singleprocessor machines. On a singleprocessor machine, the kernel
  52           will run faster if you say N here.
  53
  54           People using multiprocessor machines who say Y here should also say
  55           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
  56           Management" code will be disabled if you say Y here.
  57
  58           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  59           available at <http://www.tldp.org/docs.html#howto>.
  60
  61           If you don't know what to do here, say N.
  62
  63 config NR_CPUS
  64         int "Maximum number of CPUs (2-32)"
  65         range 2 32
  66         depends on SMP
  67         default "32"
  68
  69 config SPARC
  70         bool
  71         default y
  72         select HAVE_OPROFILE
  73
  74 # Identify this as a Sparc32 build
  75 config SPARC32
  76         bool
  77         default y
  78         help
  79           SPARC is a family of RISC microprocessors designed and marketed by
  80           Sun Microsystems, incorporated.  They are very widely found in Sun
  81           workstations and clones. This port covers the original 32-bit SPARC;
  82           it is old and stable and usually considered one of the "big three"
  83           along with the Intel and Alpha ports.  The UltraLinux project
  84           maintains both the SPARC32 and SPARC64 ports; its web page is
  85           available at <http://www.ultralinux.org/>.
  86
  87 # Global things across all Sun machines.
  88 config ISA
  89         bool
  90         help
  91           ISA is found on Espresso only and is not supported currently.
  92           Say N
  93
  94 config EISA
  95         bool
  96         help
  97           EISA is not supported.
  98           Say N
  99
 100 config MCA
 101         bool
 102         help
 103           MCA is not supported.
 104           Say N
 105
 106 config PCMCIA
 107         tristate
 108         ---help---
 109           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
 110           computer.  These are credit-card size devices such as network cards,
 111           modems or hard drives often used with laptops computers.  There are
 112           actually two varieties of these cards: the older 16 bit PCMCIA cards
 113           and the newer 32 bit CardBus cards.  If you want to use CardBus
 114           cards, you need to say Y here and also to "CardBus support" below.
 115
 116           To use your PC-cards, you will need supporting software from David
 117           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 118           for location).  Please also read the PCMCIA-HOWTO, available from
 119           <http://www.tldp.org/docs.html#howto>.
 120
 121           To compile this driver as modules, choose M here: the
 122           modules will be called pcmcia_core and ds.
 123
 124 config SBUS
 125         bool
 126         default y
 127
 128 config SBUSCHAR
 129         bool
 130         default y
 131
 132 config SERIAL_CONSOLE
 133         bool
 134         default y
 135         ---help---
 136           If you say Y here, it will be possible to use a serial port as the
 137           system console (the system console is the device which receives all
 138           kernel messages and warnings and which allows logins in single user
 139           mode). This could be useful if some terminal or printer is connected
 140           to that serial port.
 141
 142           Even if you say Y here, the currently visible virtual console
 143           (/dev/tty0) will still be used as the system console by default, but
 144           you can alter that using a kernel command line option such as
 145           "console=ttyS1". (Try "man bootparam" or see the documentation of
 146           your boot loader (silo) about how to pass options to the kernel at
 147           boot time.)
 148
 149           If you don't have a graphics card installed and you say Y here, the
 150           kernel will automatically use the first serial line, /dev/ttyS0, as
 151           system console.
 152
 153           If unsure, say N.
 154
 155 config SUN_AUXIO
 156         bool
 157         default y
 158
 159 config SUN_IO
 160         bool
 161         default y
 162
 163 config RWSEM_GENERIC_SPINLOCK
 164         bool
 165         default y
 166
 167 config RWSEM_XCHGADD_ALGORITHM
 168         bool
 169
 170 config GENERIC_FIND_NEXT_BIT
 171         bool
 172         default y
 173
 174 config GENERIC_HWEIGHT
 175         bool
 176         default y
 177
 178 config GENERIC_CALIBRATE_DELAY
 179         bool
 180         default y
 181
 182 config ARCH_MAY_HAVE_PC_FDC
 183         bool
 184         default y
 185
 186 config ARCH_HAS_ILOG2_U32
 187         bool
 188         default n
 189
 190 config ARCH_HAS_ILOG2_U64
 191         bool
 192         default n
 193
 194 config EMULATED_CMPXCHG
 195         bool
 196         default y
 197         help
 198           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 199           is emulated, and therefore it is not completely atomic.
 200
 201 config SUN_PM
 202         bool
 203         default y
 204         help
 205           Enable power management and CPU standby features on supported
 206           SPARC platforms.
 207
 208 config SUN4
 209         bool "Support for SUN4 machines (disables SUN4[CDM] support)"
 210         depends on !SMP
 211         default n
 212         help
 213           Say Y here if, and only if, your machine is a sun4. Note that
 214           a kernel compiled with this option will run only on sun4.
 215           (And the current version will probably work only on sun4/330.)
 216
 217 if !SUN4
 218
 219 config PCI
 220         bool "Support for PCI and PS/2 keyboard/mouse"
 221         help
 222           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 223           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 224           All of these platforms are extremely obscure, so say N if unsure.
 225
 226 config PCI_SYSCALL
 227         def_bool PCI
 228
 229 source "drivers/pci/Kconfig"
 230
 231 endif
 232
 233 config NO_DMA
 234         def_bool !PCI
 235
 236 config SUN_OPENPROMFS
 237         tristate "Openprom tree appears in /proc/openprom"
 238         help
 239           If you say Y, the OpenPROM device tree will be available as a
 240           virtual file system, which you can mount to /proc/openprom by "mount
 241           -t openpromfs none /proc/openprom".
 242
 243           To compile the /proc/openprom support as a module, choose M here: the
 244           module will be called openpromfs.
 245
 246           Only choose N if you know in advance that you will not need to modify
 247           OpenPROM settings on the running system.
 248
 249 config SPARC_LED
 250         tristate "Sun4m LED driver"
 251         help
 252           This driver toggles the front-panel LED on sun4m systems
 253           in a user-specifiable manner.  Its state can be probed
 254           by reading /proc/led and its blinking mode can be changed
 255           via writes to /proc/led
 256
 257 source "fs/Kconfig.binfmt"
 258
 259 config SUNOS_EMUL
 260         bool "SunOS binary emulation"
 261         help
 262           This allows you to run most SunOS binaries.  If you want to do this,
 263           say Y here and place appropriate files in /usr/gnemul/sunos. See
 264           <http://www.ultralinux.org/faq.html> for more information.  If you
 265           want to run SunOS binaries on an Ultra you must also say Y to
 266           "Kernel support for 32-bit a.out binaries" above.
 267
 268 source "mm/Kconfig"
 269
 270 endmenu
 271
 272 source "net/Kconfig"
 273
 274 source "drivers/Kconfig"
 275
 276 if !SUN4
 277 source "drivers/sbus/char/Kconfig"
 278 endif
 279
 280 # This one must be before the filesystem configs. -DaveM
 281
 282 menu "Unix98 PTY support"
 283
 284 config UNIX98_PTYS
 285         bool "Unix98 PTY support"
 286         ---help---
 287           A pseudo terminal (PTY) is a software device consisting of two
 288           halves: a master and a slave. The slave device behaves identical to
 289           a physical terminal; the master device is used by a process to
 290           read data from and write data to the slave, thereby emulating a
 291           terminal. Typical programs for the master side are telnet servers
 292           and xterms.
 293
 294           Linux has traditionally used the BSD-like names /dev/ptyxx for
 295           masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
 296           has a number of problems. The GNU C library glibc 2.1 and later,
 297           however, supports the Unix98 naming standard: in order to acquire a
 298           pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
 299           terminal is then made available to the process and the pseudo
 300           terminal slave can be accessed as /dev/pts/<number>. What was
 301           traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
 302
 303           The entries in /dev/pts/ are created on the fly by a virtual
 304           file system; therefore, if you say Y here you should say Y to
 305           "/dev/pts file system for Unix98 PTYs" as well.
 306
 307           If you want to say Y here, you need to have the C library glibc 2.1
 308           or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
 309           Read the instructions in <file:Documentation/Changes> pertaining to
 310           pseudo terminals. It's safe to say N.
 311
 312 config UNIX98_PTY_COUNT
 313         int "Maximum number of Unix98 PTYs in use (0-2048)"
 314         depends on UNIX98_PTYS
 315         default "256"
 316         help
 317           The maximum number of Unix98 PTYs that can be used at any one time.
 318           The default is 256, and should be enough for desktop systems. Server
 319           machines which support incoming telnet/rlogin/ssh connections and/or
 320           serve several X terminals may want to increase this: every incoming
 321           connection and every xterm uses up one PTY.
 322
 323           When not in use, each additional set of 256 PTYs occupy
 324           approximately 8 KB of kernel memory on 32-bit architectures.
 325
 326 endmenu
 327
 328 source "fs/Kconfig"
 329
 330 source "arch/sparc/Kconfig.debug"
 331
 332 source "security/Kconfig"
 333
 334 source "crypto/Kconfig"
 335
 336 source "lib/Kconfig"